<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡牌视图 -->
    <el-card>
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodsList">
            <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="goAddPage">
            添加商品
          </el-button>
        </el-col>
      </el-row>

      <!-- table表格区域 -->
      <el-table :data="goodslist" style="width: 100%" border stripe>
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column prop="goods_name" label="商品名称"></el-table-column>
        <el-table-column width="95px" prop="goods_price" label="商品价格(元)"></el-table-column>
        <el-table-column width="85px" prop="goods_weight" label="商品重量"></el-table-column>
        <el-table-column width="140px" prop="add_time" label="创建时间">
          <template slot-scope="scope">
            {{ scope.row.add_time | dateFormat }}
          </template>
        </el-table-column>
        <el-table-column width="130px" label="操作">
          <template slot-scope="scope">
            <!-- 编辑按钮 -->
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.goods_id)"></el-button>
            <!-- 删除按钮 -->
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeGoodsById(scope.row.goods_id)"></el-button>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页 -->
      <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange" :current-page="queryInfo.pagenum" :page-sizes="[5, 10, 15, 20]" :page-size="queryInfo.pagesize" layout="total, sizes, prev, pager, next, jumper" :total="total"></el-pagination>
    </el-card>

    <!-- 编辑对话框 -->
    <el-dialog title="修改商品信息" :visible.sync="editListDialogVisible" width="50%" @close="editListDialogClosed">
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="100px">
        <el-form-item label="商品名称" prop="goods_name">
          <el-input v-model="editForm.goods_name"></el-input>
        </el-form-item>
        <el-form-item label="商品价格" prop="goods_price">
          <el-input v-model="editForm.goods_price"></el-input>
        </el-form-item>
        <el-form-item label="商品数量" prop="goods_number">
          <el-input v-model="editForm.goods_number"></el-input>
        </el-form-item>
        <el-form-item label="商品重量" prop="goods_weight">
          <el-input v-model="editForm.goods_weight"></el-input>
        </el-form-item>
        <el-form-item label="商品介绍" prop="goods_introduce">
          <el-input type="textarea" autosize v-model="editForm.goods_introduce"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editListDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editList">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 查询参数对象
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 10
      },
      // 商品列表
      goodslist: [],
      // 数据总数
      total: 0,
      // 查询到的商品信息对象
      editForm: {},
      // 控制编辑对话框的显示和隐藏
      editListDialogVisible: false,
      // 验证表单对象规则
      editFormRules: {
        goods_name: [{ required: true, message: '请输入商品名称', trigger: 'blur' }],
        goods_price: [{ required: true, message: '请输入商品名称', trigger: 'blur' }],
        goods_number: [{ required: true, message: '请输入商品数量', trigger: 'blur' }],
        goods_weight: [{ required: true, message: '请输入商品重量', trigger: 'blur' }]
      }
    }
  },
  created() {
    this.getGoodsList()
  },
  // 方法集合
  methods: {
    // 根据分页获取相应的商品列表
    async getGoodsList() {
      const { data: res } = await this.$http.get('goods', { params: this.queryInfo })
      if (res.meta.status !== 200) return this.$message.error('获取商品列表失败！')
      //   this.$message.success('获取商品列表成功！')
      //   console.log(res.data)
      this.goodslist = res.data.goods
      this.total = res.data.total
    },
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize
      this.getGoodsList()
    },
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage
      this.getGoodsList()
    },
    // 点击按钮，展示编辑对话框
    async showEditDialog(id) {
      const { data: res } = await this.$http.get(`goods/${id}`)
      if (res.meta.status !== 200) return this.$message.error('查询商品信息失败！')
      this.editForm = res.data
      //   console.log(this.editForm)
      this.editListDialogVisible = true
    },
    // 重置表单
    editListDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    // 点击按钮，修改并提交表单
    editList() {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return false
        const { data: res } = await this.$http.put('goods/' + this.editForm.goods_id, {
          goods_name: this.editForm.goods_name,
          goods_price: this.editForm.goods_price,
          goods_number: this.editForm.goods_number,
          goods_weight: this.editForm.goods_weight,
          goods_introduce: this.editForm.goods_introduce,
          goods_cat: this.editForm.goods_cat
        })
        if (res.meta.status !== 200) return this.$message.error('修改商品信息失败！')
        this.editListDialogVisible = false
        this.$message.success('修改商品信息成功！')
        this.getGoodsList()
      })
    },
    // 根据id删除对应的商品
    async removeGoodsById(id) {
      // 弹框询问分类是否删除数据
      const confirmResult = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      // 如果商品确认删除，则返回值为字符串 confirm
      // 如果商品确认取消，则返回值为字符串 cancel
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除')
      }
      const { data: res } = await this.$http.delete(`goods/${id}`)
      if (res.meta.status !== 200) return this.$message.error('删除商品失败！')
      this.getGoodsList()
      this.$message.success('删除商品成功！')
    },
    // 跳转到添加商品页面
    goAddPage() {
      this.$router.push('/goods/add')
    }
  }
}
</script>

<style lang="less" scoped></style>
